Anomalous photomagnetoresistance

Anomalous photomagnetoresistance in modulation-doped heterostructures (1984).

Principal collaborator: Alex Kastalsky

We discovered a puzzling anomaly in photomagnetic properties of modulation-doped heterostructures: the longitudinal resistance increases sharply with the increasing concentration of carriers in the high-mobility channel under illumination. We explained this effect by a peculiar interplay between the longitudinal and the Hall resistance of the 2D electron gas and the parallel parasitic resistance of the wide bandgap layer.

Key paper: 26

Where the numbers refer to the attached list of Publications

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